A complete \(\mathcal{O}(\alpha_{\mathrm{S}}^{2})\) calculation of the signal–background interference for the Higgs diphoton decay channel

  • Daniel de Florian
  • Nerina Fidanza
  • Roger Hernández-Pinto
  • Javier Mazzitelli
  • Yamila Rotstein Habarnau
  • Germán Sborlini
Regular Article - Theoretical Physics

Abstract

We present the full \(\mathcal{O}(\alpha_{\mathrm{S}}^{2})\) computation of the interference effects between the Higgs diphoton signal and the continuum background at the LHC. While the main contribution to the interference originates on the gg partonic subprocess, we find that the corrections from the qg and \(q\bar{q}\) channels amount up to 35 % of it. We discuss the effect of these new subprocesses in the shift of the diphoton invariant mass peak recently reported by S. Martin in (Phys. Rev. D 86:073016, 2012).

Keywords

Higgs Boson Large Hadron Collider Interference Channel Partonic Cross Section Soft Gluon Resummation 

Notes

Acknowledgements

We thank L. Cieri and the participants of the Second Phenomenology Workshop (Tandil 2012) for discussions and contributions at the various stages of this work, and L. Dixon and S. Martin for helpful comments and comparisons. This work was supported in part by UBACYT, CONICET, ANPCyT and the Research Executive Agency (REA) of the European Union under the Grant Agreement number PITN-GA-2010-264564 (LHCPhenoNet).

References

  1. 1.
    S.P. Martin, Phys. Rev. D 86, 073016 (2012). arXiv:1208.1533 [hep-ph] ADSCrossRefGoogle Scholar
  2. 2.
    S. Chatrchyan et al. (CMS Collaboration), Phys. Lett. B 716, 30 (2012). arXiv:1207.7235 [hep-ex] ADSCrossRefGoogle Scholar
  3. 3.
    G. Aad et al. (ATLAS Collaboration), Phys. Lett. B 716, 1 (2012). arXiv:1207.7214 [hep-ex] ADSCrossRefGoogle Scholar
  4. 4.
    ATLAS: detector and physics performance technical design report, vol. 2, CERN-LHCC-99-15 Google Scholar
  5. 5.
    H.M. Georgi, S.L. Glashow, M.E. Machacek, D.V. Nanopoulos, Phys. Rev. Lett. 40, 692 (1978) ADSCrossRefGoogle Scholar
  6. 6.
    S. Dawson, Nucl. Phys. B 359, 283 (1991) ADSCrossRefGoogle Scholar
  7. 7.
    A. Djouadi, M. Spira, P.M. Zerwas, Phys. Lett. B 264, 440 (1991) ADSCrossRefGoogle Scholar
  8. 8.
    M. Spira, A. Djouadi, D. Graudenz, P.M. Zerwas, Nucl. Phys. B 453, 17 (1995) ADSCrossRefGoogle Scholar
  9. 9.
    R.V. Harlander, W.B. Kilgore, Phys. Rev. Lett. 88, 201801 (2002) ADSCrossRefGoogle Scholar
  10. 10.
    C. Anastasiou, K. Melnikov, Nucl. Phys. B 646, 220 (2002) ADSCrossRefGoogle Scholar
  11. 11.
    V. Ravindran, J. Smith, W.L. van Neerven, Nucl. Phys. B 665, 325 (2003) ADSCrossRefGoogle Scholar
  12. 12.
    C. Anastasiou, K. Melnikov, F. Petriello, Phys. Rev. Lett. 93, 262002 (2004) ADSCrossRefGoogle Scholar
  13. 13.
    C. Anastasiou, K. Melnikov, F. Petriello, Nucl. Phys. B 724, 197 (2005) ADSCrossRefGoogle Scholar
  14. 14.
    C. Anastasiou, G. Dissertori, F. Stockli, J. High Energy Phys. 0709, 018 (2007) ADSCrossRefGoogle Scholar
  15. 15.
    S. Catani, M. Grazzini, Phys. Rev. Lett. 98, 222002 (2007) ADSCrossRefGoogle Scholar
  16. 16.
    M. Grazzini, J. High Energy Phys. 0802, 043 (2008) ADSCrossRefGoogle Scholar
  17. 17.
    D. de Florian, M. Grazzini, Phys. Lett. B 718, 117 (2012). arXiv:1206.4133 [hep-ph] ADSCrossRefGoogle Scholar
  18. 18.
    U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, Phys. Lett. B 595, 432 (2004) ADSCrossRefGoogle Scholar
  19. 19.
    G. Degrassi, F. Maltoni, Phys. Lett. B 600, 255 (2004) ADSCrossRefGoogle Scholar
  20. 20.
    U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, arXiv:hep-ph/0610033
  21. 21.
    S. Actis, G. Passarino, C. Sturm, S. Uccirati, Phys. Lett. B 670, 12 (2008) ADSCrossRefGoogle Scholar
  22. 22.
    S. Actis, G. Passarino, C. Sturm, S. Uccirati, Nucl. Phys. B 811, 182 (2009) ADSMATHCrossRefGoogle Scholar
  23. 23.
    S. Catani, D. de Florian, M. Grazzini, P. Nason, J. High Energy Phys. 0307, 028 (2003) ADSCrossRefGoogle Scholar
  24. 24.
    S. Dittmaier et al. (LHC Higgs Cross Section Working Group Collaboration), arXiv:1101.0593 [hep-ph]
  25. 25.
    S. Dittmaier et al. (LHC Higgs Cross Section Working Group Collaboration), arXiv:1201.3084 [hep-ph]
  26. 26.
    J.R. Ellis, M.K. Gaillard, D.V. Nanopoulos, Nucl. Phys. B 106, 292 (1976) ADSGoogle Scholar
  27. 27.
    M.A. Shifman, A.I. Vainshtein, M.B. Voloshin, V.I. Zakharov, Sov. J. Nucl. Phys. 30, 711 (1979) [Yad. Fiz. 30, 1368 (1979)] Google Scholar
  28. 28.
    H.-Q. Zheng, D.-D. Wu, Phys. Rev. D 42, 3760–3763 (1990) ADSCrossRefGoogle Scholar
  29. 29.
    A. Djouadi, M. Spira, J. van der Bij, P. Zerwas, Phys. Lett. B 257, 187–190 (1991) ADSCrossRefGoogle Scholar
  30. 30.
    S. Dawson, R. Kauffman, Phys. Rev. D 47, 1264–1267 (1993) ADSCrossRefGoogle Scholar
  31. 31.
    A. Djouadi, M. Spira, P. Zerwas, Phys. Lett. B 311, 255–260 (1993). arXiv:hep-ph/9305335 [hep-ph] ADSCrossRefGoogle Scholar
  32. 32.
    K. Melnikov, O.I. Yakovlev, Phys. Lett. B 312, 179–183 (1993). arXiv:hep-ph/9302281 [hep-ph] ADSCrossRefGoogle Scholar
  33. 33.
    M. Inoue, R. Najima, T. Oka, J. Saito, Mod. Phys. Lett. A 9, 1189–1194 (1994) ADSCrossRefGoogle Scholar
  34. 34.
    S. Catani, L. Cieri, D. de Florian, G. Ferrera, M. Grazzini, Phys. Rev. Lett. 108, 072001 (2012). arXiv:1110.2375 [hep-ph] ADSCrossRefGoogle Scholar
  35. 35.
    S. Goria, G. Passarino, D. Rosco, Nucl. Phys. B 864, 530 (2012). arXiv:1112.5517 [hep-ph] ADSMATHCrossRefGoogle Scholar
  36. 36.
    L.J. Dixon, M.S. Siu, Phys. Rev. Lett. 90, 252001 (2003). arXiv:hep-ph/0302233 ADSCrossRefGoogle Scholar
  37. 37.
    D.A. Dicus, S.S.D. Willenbrock, Phys. Rev. D 37, 1801 (1988) ADSCrossRefGoogle Scholar
  38. 38.
    T. Hahn, Comput. Phys. Commun. 140, 418 (2001). arXiv:hep-ph/0012260 ADSCrossRefGoogle Scholar
  39. 39.
    R. Mertig, M. Bohm, A. Denner, Comput. Phys. Commun. 64, 345 (1991) MathSciNetADSCrossRefGoogle Scholar
  40. 40.
    A.D. Martin, W.J. Stirling, R.S. Thorne, G. Watt, Eur. Phys. J. C 63, 189 (2009). arXiv:0901.0002 [hep-ph] ADSCrossRefGoogle Scholar
  41. 41.
    J. Beringer et al. (Particle Data Group), Phys. Rev. D 86, 010001 (2012) ADSCrossRefGoogle Scholar
  42. 42.
    S. Frixione, Phys. Lett. B 429, 369 (1998). arXiv:hep-ph/9801442 ADSCrossRefGoogle Scholar
  43. 43.
    D. de Florian, Z. Kunszt, Phys. Lett. B 460, 184 (1999). arXiv:hep-ph/9905283 ADSCrossRefGoogle Scholar
  44. 44.
    G. Passarino, J. High Energy Phys. 1208, 146 (2012). arXiv:1206.3824 [hep-ph] ADSCrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg and Società Italiana di Fisica 2013

Authors and Affiliations

  • Daniel de Florian
    • 1
  • Nerina Fidanza
    • 1
  • Roger Hernández-Pinto
    • 1
  • Javier Mazzitelli
    • 1
  • Yamila Rotstein Habarnau
    • 1
  • Germán Sborlini
    • 1
  1. 1.Departamento de Física, FCEyNUniversidad de Buenos AiresCapital FederalArgentina

Personalised recommendations